Physician David Casarett was tired of hearing hype and half-truths around medical marijuana, so he put on his sceptic’s hat and investigated on his own. He comes back with a fascinating report on what we know and what we don’t — and what mainstream medicine could learn from the modern medical marijuana dispensary.

Machine intelligence is here, and we’re already using it to make subjective decisions. But the complex way AI grows and improves makes it hard to understand and even harder to control. In this cautionary talk, techno-sociologist Zeynep Tufekci explains how intelligent machines can fail in ways that don’t fit human error patterns.

Questions of good and evil, right and wrong are commonly thought unanswerable by science. But Sam Harris argues that science can — and should — be an authority on moral issues, shaping human values and setting out what constitutes a good life.

California’s Zume Pizza has robots working with humans to make pizzas faster, better and healthier. The company has also patented technology to allow pizzas to be baked on the way to customers’ doors, delivering fresher, crispier pizza.

Vanessa Ruiz takes us on an illustrated journey of human anatomical art over the centuries, sharing captivating images that bring this visual science — and the contemporary artists inspired by it — to life.